Process for dyeing keratinous fibers with 5,6-dihydroxyindole in

Details Process for dyeing keratinous fibers with 5,6-dihydroxyindole in Process for dyeing keratinous fibers with 5,6-dihydroxyindole in

1988-04-04

1989-12-19

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

8406, 8634, A61K 713

Patent

active

048880272

ABSTRACT:
Process for dyeing keratinous fibres, characterized in that there is applied to these fibres at least one composition (A) containing, in an appropriate medium for dyeing, 5,6-dihydroxyindole in combination with iodide ions, the application of this composition (A) being preceded or followed by the application of a composition (B) which contains, in an appropriate medium for dyeing, hydrogen peroxide at an alkaline pH of less than 12.

REFERENCES:
patent: 1677508 (1928-07-01), Winogradoff
patent: 4208183 (1980-06-01), Grollier et al.
patent: 4746322 (1988-05-01), Herlihy

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